Thread: Word Processor for Max Carta + BT Keyboard?
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Old 12-07-2017, 11:02 AM   #24
mdp
Wizard
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Quote:
Originally Posted by Lode View Post
I don't know if this has anything to do with it, but in Power Manager I have "Never" for Sleep and Power off timeout, and 30 min. for Network Inactivity Timeout.
That's not the wake-lock: that is when the device goes to a patent sleep mode - the screen becomes a screen-saver image.
What the wake lock prevents, you do not see: the CPU goes to sleep, and you have no signal that it happens. It wakes up after you wake the device giving hardware input (buttons, screen touch etc.) - but BlueTooth input does not count for that, so you type all you want and the device stays enchanted in a limbo.

The optimal process would be: when the device believes that it is time to take a nap and preserve battery, it should (it does), but upon BlueTooth keystroke, it wakes up. I am not sure it is possible to implement that in a firmware. BlueTooth keystrokes are not "hardware interrupts": there is a radio in between, a more complex mechanism than the hardware buttons.
Last edited by mdp; 12-07-2017 at 11:09 AM.
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